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2 vulnerabilities found for by blindsidenetworks
CVE-2026-27737 (GCVE-0-2026-27737)
Vulnerability from cvelistv5
Published
2026-05-18 21:11
Modified
2026-05-19 12:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.19, the recording playback (presentation format) was not sanitizing user's input in public chat. This allowed for a malicious actor to craft and carry out a targeted XSS attack, activated on anyone replaying the recording. This issue has been fixed 3.0.19.
References
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Version: < 3.0.19 |
||||||||||||
|
||||||||||||||
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"role": "CISA Coordinator",
"timestamp": "2026-05-19T12:11:45.789071Z",
"version": "2.0.3"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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"vendor": "bigbluebutton",
"versions": [
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"status": "affected",
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},
{
"product": "scalite",
"vendor": "blindsidenetworks",
"versions": [
{
"status": "affected",
"version": "\u003c 1.7.0"
}
]
},
{
"product": "bbb-playback",
"vendor": "bigbluebutton",
"versions": [
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"status": "affected",
"version": "\u003c 5.4.3"
}
]
}
],
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"lang": "en",
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}
],
"metrics": [
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
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"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8vv7-vj94-q2pv",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8vv7-vj94-q2pv"
},
{
"name": "https://github.com/bigbluebutton/bbb-playback/commit/09e89bfe4ff8488b68c3ff040d3081e419dc89b1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bbb-playback/commit/09e89bfe4ff8488b68c3ff040d3081e419dc89b1"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/69f45aa1b963dc7d80179d0155acc670aec5c4fc",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/69f45aa1b963dc7d80179d0155acc670aec5c4fc"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v3.0.19",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/releases/tag/v3.0.19"
},
{
"name": "https://github.com/blindsidenetworks/scalelite/releases/tag/v1.7.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/blindsidenetworks/scalelite/releases/tag/v1.7.0"
}
],
"source": {
"advisory": "GHSA-8vv7-vj94-q2pv",
"discovery": "UNKNOWN"
},
"title": "BigBlueButton has Stored XSS in bbb-playback replay"
}
},
"cveMetadata": {
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"cveId": "CVE-2026-27737",
"datePublished": "2026-05-18T21:11:17.611Z",
"dateReserved": "2026-02-23T18:37:14.790Z",
"dateUpdated": "2026-05-19T12:11:53.931Z",
"state": "PUBLISHED"
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CVE-2023-7296 (GCVE-0-2023-7296)
Vulnerability from cvelistv5
Published
2024-10-16 07:31
Modified
2026-04-08 16:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
The BigBlueButton plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the moderator code and viewer code fields in versions up to, and including, 3.0.0-beta.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with author privileges or higher to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| blindsidenetworks | BigBlueButton |
Version: 0 ≤ 3.0.0-beta.4 |
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"role": "CISA Coordinator",
"timestamp": "2024-10-16T12:57:38.687396Z",
"version": "2.0.3"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
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"cna": {
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"product": "BigBlueButton",
"vendor": "blindsidenetworks",
"versions": [
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"lessThanOrEqual": "3.0.0-beta.4",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
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"type": "finder",
"value": "Marco Wotschka"
}
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}
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"metrics": [
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"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
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"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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],
"providerMetadata": {
"dateUpdated": "2026-04-08T16:56:22.880Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
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"references": [
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"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/5f829d21-5347-46ec-9218-2b3cbe7d7b95?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/bigbluebutton/trunk/public/partials/bigbluebutton-join-display.php#L26"
}
],
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"time": "2023-08-02T00:00:00.000Z",
"value": "Discovered"
},
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"time": "2023-08-17T00:00:00.000Z",
"value": "Disclosed"
}
],
"title": "BigBlueButton \u003c= 3.0.0-beta.4 - Authenticated (Author+) Stored Cross-Site Scripting"
}
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"datePublished": "2024-10-16T07:31:50.234Z",
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